Question

identify that which halogen exist as gases liquid and solid​

Answer 1

Answer:

Fluorine (F) and chlorine (Cl) exist as gases, while Bromine (Br) is a liquid, and Iodine (I) exists as a solid at room temperature

Explanation:

The elements of Group 17 are fluorine, chlorine, bromine, iodine, and astatine are called the halogens.  The term “halogen” stands for “salt-former”. The  general electron configuration of halogens is ns²np⁵.

Physical  and chemical properties of halogens:

• Chlorine and Fluorine exist as gases at room temperature, bromine is a dark orange liquid, and iodine exists as dark purple-gray solid.
• Astatine is rare  element so its properties mostly unknown.
• Halogens contain seven electrons in their outer or valence shells.

• As the atomic number of halogens increases, its reactivity decreases.

• All the halogens are non metallic in character.
• The most electronegative element in the modern periodic table is fluorine (F).

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